chrislicodes_obsidian-chess-study/rename-styles.mjs

import { existsSync, renameSync } from 'fs';

export const renameStyles = {
	name: 'rename-styles',
	setup(build) {
		build.onEnd(() => {
			const { outfile } = build.initialOptions;
			const outcss = outfile.replace(/\.js$/, '.css');
			const fixcss = outfile.replace(/main\.js$/, 'styles.css');
			if (existsSync(outcss)) {
				console.log('Renaming', outcss, 'to', fixcss);
				renameSync(outcss, fixcss);
			}
		});
	},
};